forked from luck/tmp_suning_uos_patched
cifs: change smb2_query_eas to use the compound query-info helper
Reducing the number of network roundtrips improves the performance of query xattrs Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Ronnie Sahlberg
Steve French
parent
4a3b38aec5
commit
f9793b6fcc
|
|
@ -831,72 +831,48 @@ smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
|
|||
{
|
||||
int rc;
|
||||
__le16 *utf16_path;
|
||||
__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
|
||||
struct cifs_open_parms oparms;
|
||||
struct cifs_fid fid;
|
||||
struct smb2_file_full_ea_info *smb2_data;
|
||||
int ea_buf_size = SMB2_MIN_EA_BUF;
|
||||
struct kvec rsp_iov = {NULL, 0};
|
||||
int buftype = CIFS_NO_BUFFER;
|
||||
struct smb2_query_info_rsp *rsp;
|
||||
struct smb2_file_full_ea_info *info = NULL;
|
||||
|
||||
utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
|
||||
if (!utf16_path)
|
||||
return -ENOMEM;
|
||||
|
||||
oparms.tcon = tcon;
|
||||
oparms.desired_access = FILE_READ_EA;
|
||||
oparms.disposition = FILE_OPEN;
|
||||
if (backup_cred(cifs_sb))
|
||||
oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
|
||||
else
|
||||
oparms.create_options = 0;
|
||||
oparms.fid = &fid;
|
||||
oparms.reconnect = false;
|
||||
|
||||
rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
|
||||
kfree(utf16_path);
|
||||
rc = smb2_query_info_compound(xid, tcon, utf16_path,
|
||||
FILE_READ_EA,
|
||||
FILE_FULL_EA_INFORMATION,
|
||||
SMB2_O_INFO_FILE,
|
||||
SMB2_MAX_EA_BUF,
|
||||
&rsp_iov, &buftype, cifs_sb);
|
||||
if (rc) {
|
||||
cifs_dbg(FYI, "open failed rc=%d\n", rc);
|
||||
return rc;
|
||||
/*
|
||||
* If ea_name is NULL (listxattr) and there are no EAs,
|
||||
* return 0 as it's not an error. Otherwise, the specified
|
||||
* ea_name was not found.
|
||||
*/
|
||||
if (!ea_name && rc == -ENODATA)
|
||||
rc = 0;
|
||||
goto qeas_exit;
|
||||
}
|
||||
|
||||
while (1) {
|
||||
smb2_data = kzalloc(ea_buf_size, GFP_KERNEL);
|
||||
if (smb2_data == NULL) {
|
||||
SMB2_close(xid, tcon, fid.persistent_fid,
|
||||
fid.volatile_fid);
|
||||
return -ENOMEM;
|
||||
}
|
||||
rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
|
||||
rc = smb2_validate_iov(le16_to_cpu(rsp->OutputBufferOffset),
|
||||
le32_to_cpu(rsp->OutputBufferLength),
|
||||
&rsp_iov,
|
||||
sizeof(struct smb2_file_full_ea_info));
|
||||
if (rc)
|
||||
goto qeas_exit;
|
||||
|
||||
rc = SMB2_query_eas(xid, tcon, fid.persistent_fid,
|
||||
fid.volatile_fid,
|
||||
ea_buf_size, smb2_data);
|
||||
info = (struct smb2_file_full_ea_info *)(
|
||||
le16_to_cpu(rsp->OutputBufferOffset) + (char *)rsp);
|
||||
rc = move_smb2_ea_to_cifs(ea_data, buf_size, info,
|
||||
le32_to_cpu(rsp->OutputBufferLength), ea_name);
|
||||
|
||||
if (rc != -E2BIG)
|
||||
break;
|
||||
|
||||
kfree(smb2_data);
|
||||
ea_buf_size <<= 1;
|
||||
|
||||
if (ea_buf_size > SMB2_MAX_EA_BUF) {
|
||||
cifs_dbg(VFS, "EA size is too large\n");
|
||||
SMB2_close(xid, tcon, fid.persistent_fid,
|
||||
fid.volatile_fid);
|
||||
return -ENOMEM;
|
||||
}
|
||||
}
|
||||
|
||||
SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
|
||||
|
||||
/*
|
||||
* If ea_name is NULL (listxattr) and there are no EAs, return 0 as it's
|
||||
* not an error. Otherwise, the specified ea_name was not found.
|
||||
*/
|
||||
if (!rc)
|
||||
rc = move_smb2_ea_to_cifs(ea_data, buf_size, smb2_data,
|
||||
SMB2_MAX_EA_BUF, ea_name);
|
||||
else if (!ea_name && rc == -ENODATA)
|
||||
rc = 0;
|
||||
|
||||
kfree(smb2_data);
|
||||
qeas_exit:
|
||||
kfree(utf16_path);
|
||||
free_rsp_buf(buftype, rsp_iov.iov_base);
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
|
@ -1841,11 +1817,12 @@ smb2_set_next_command(struct TCP_Server_Info *server, struct smb_rqst *rqst,
|
|||
* Passes the query info response back to the caller on success.
|
||||
* Caller need to free this with free_rsp_buf().
|
||||
*/
|
||||
static int
|
||||
int
|
||||
smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
|
||||
__le16 *utf16_path, u32 desired_access,
|
||||
u32 class, u32 type, u32 output_len,
|
||||
struct kvec *rsp, int *buftype)
|
||||
struct kvec *rsp, int *buftype,
|
||||
struct cifs_sb_info *cifs_sb)
|
||||
{
|
||||
struct cifs_ses *ses = tcon->ses;
|
||||
struct TCP_Server_Info *server = ses->server;
|
||||
|
|
@ -1875,7 +1852,10 @@ smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
|
|||
oparms.tcon = tcon;
|
||||
oparms.desired_access = desired_access;
|
||||
oparms.disposition = FILE_OPEN;
|
||||
oparms.create_options = 0;
|
||||
if (cifs_sb && backup_cred(cifs_sb))
|
||||
oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
|
||||
else
|
||||
oparms.create_options = 0;
|
||||
oparms.fid = &fid;
|
||||
oparms.reconnect = false;
|
||||
|
||||
|
|
@ -1908,9 +1888,10 @@ smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
|
|||
|
||||
rc = compound_send_recv(xid, ses, flags, 3, rqst,
|
||||
resp_buftype, rsp_iov);
|
||||
if (rc)
|
||||
if (rc) {
|
||||
free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
|
||||
goto qic_exit;
|
||||
|
||||
}
|
||||
*rsp = rsp_iov[1];
|
||||
*buftype = resp_buftype[1];
|
||||
|
||||
|
|
@ -1940,7 +1921,7 @@ smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
|
|||
FS_FULL_SIZE_INFORMATION,
|
||||
SMB2_O_INFO_FILESYSTEM,
|
||||
sizeof(struct smb2_fs_full_size_info),
|
||||
&rsp_iov, &buftype);
|
||||
&rsp_iov, &buftype, NULL);
|
||||
if (rc)
|
||||
goto qfs_exit;
|
||||
|
||||
|
|
|
|||
|
|
@ -2768,18 +2768,6 @@ query_info(const unsigned int xid, struct cifs_tcon *tcon,
|
|||
return rc;
|
||||
}
|
||||
|
||||
int SMB2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
|
||||
u64 persistent_fid, u64 volatile_fid,
|
||||
int ea_buf_size, struct smb2_file_full_ea_info *data)
|
||||
{
|
||||
return query_info(xid, tcon, persistent_fid, volatile_fid,
|
||||
FILE_FULL_EA_INFORMATION, SMB2_O_INFO_FILE, 0,
|
||||
ea_buf_size,
|
||||
sizeof(struct smb2_file_full_ea_info),
|
||||
(void **)&data,
|
||||
NULL);
|
||||
}
|
||||
|
||||
int SMB2_query_info(const unsigned int xid, struct cifs_tcon *tcon,
|
||||
u64 persistent_fid, u64 volatile_fid, struct smb2_file_all_info *data)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -1398,7 +1398,6 @@ struct smb2_file_link_info { /* encoding of request for level 11 */
|
|||
char FileName[0]; /* Name to be assigned to new link */
|
||||
} __packed; /* level 11 Set */
|
||||
|
||||
#define SMB2_MIN_EA_BUF 2048
|
||||
#define SMB2_MAX_EA_BUF 65536
|
||||
|
||||
struct smb2_file_full_ea_info { /* encoding of response for level 15 */
|
||||
|
|
|
|||
|
|
@ -154,10 +154,6 @@ extern int SMB2_close_init(struct cifs_tcon *tcon, struct smb_rqst *rqst,
|
|||
extern void SMB2_close_free(struct smb_rqst *rqst);
|
||||
extern int SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon,
|
||||
u64 persistent_file_id, u64 volatile_file_id);
|
||||
extern int SMB2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
|
||||
u64 persistent_file_id, u64 volatile_file_id,
|
||||
int ea_buf_size,
|
||||
struct smb2_file_full_ea_info *data);
|
||||
extern int SMB2_query_info(const unsigned int xid, struct cifs_tcon *tcon,
|
||||
u64 persistent_file_id, u64 volatile_file_id,
|
||||
struct smb2_file_all_info *data);
|
||||
|
|
@ -241,4 +237,10 @@ extern void smb2_copy_fs_info_to_kstatfs(
|
|||
extern int smb311_crypto_shash_allocate(struct TCP_Server_Info *server);
|
||||
extern int smb311_update_preauth_hash(struct cifs_ses *ses,
|
||||
struct kvec *iov, int nvec);
|
||||
extern int smb2_query_info_compound(const unsigned int xid,
|
||||
struct cifs_tcon *tcon,
|
||||
__le16 *utf16_path, u32 desired_access,
|
||||
u32 class, u32 type, u32 output_len,
|
||||
struct kvec *rsp, int *buftype,
|
||||
struct cifs_sb_info *cifs_sb);
|
||||
#endif /* _SMB2PROTO_H */
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user